Condensed Consolidated Statements of Operations - USD ($) $ in Thousands, shares in Millions		3 Months Ended
		Apr. 03, 2021	Mar. 28, 2020
Income Statement [Abstract]
Net sales	[1]	$ 1,010,000	$ 1,083,300
Cost of sales		641,600	689,600
Gross profit		368,400	393,700
Operating expenses
Distribution		21,600	20,200
Research and development		31,100	27,900
Selling		135,500	139,600
Administration		127,100	119,600
Restructuring		1,700	0
Total operating expenses		317,000	307,300
Operating income		51,400	86,400
Change in financial assets		0	(1,600)
Interest expense, net		32,000	28,900
Other (income) expense, net		2,400	1,700
Income from continuing operations before income taxes		17,000	57,400
Income tax expense (benefit)		14,200	(200)
Income from continuing operations		2,800	57,600
Income from discontinued operations, net of tax		35,300	48,800
Net income		$ 38,100	$ 106,400
Basic
Continuing operations (in dollars per share)		$ 0.02	$ 0.42
Discontinued operations (in dollars per share)		0.27	0.36
Basic earnings per share (in dollars per share)		0.29	0.78
Diluted
Continuing operations (in dollars per share)		0.02	0.42
Discontinued operations (in dollars per share)		0.26	0.35
Diluted earnings per share (in dollars per share)		$ 0.28	$ 0.77
Weighted-average shares outstanding
Basic (in shares)		133.2	136.2
Diluted (in shares)		134.6	137.3

[1] Derived from the location of the entity that sells to a third party.